Page 196 - Design of Solar Thermal Power Plants

3.3 THERMAL PERFORMANCE OF PARABOLIC TROUGH COLLECTOR 181

1
0.5

0
Percent Error ( % ) -1.5
-0.5
-1

-2
-2.5
-3

-3.5
10:00 10:30 11:00 11:30 12:00 12:30 13:00
Time ( HH:MM )
FIGURE 3.31 Relative error of dynamic model on the predicted value under experi-
mental condition I.

160
D
140 M
120
100
Output Power ( kW ) 80

60
40
20
0

-20
-40
10:00 10:30 11:00 11:30 12:00 12:30 13:00
Time ( HH:MM )
FIGURE 3.32 Predicted value of collector output power by dynamic model under exper-
imental condition I.

variation curve M obtained through the measured value calculation,
differences of some values from beginning of the test and parabolic
trough collector state adjustment period have exceeded 20 kW, but in
general, no matter for the heating process or cooling process of parabolic